There are beautiful flowers for every letter of the alphabet. In this article, we have a list of plants with flowers that start with J and key information about each one. Let's take a look at all the different J plants.
To learn more about the various flowers available for your garden, make sure to check out our list of “Flower Names A to Z”.
Flowers That Start With The Letter J
Quick Links
- Jaborosa
- Jacaranda
- Jack-in-the-Pulpit
- Jacob's Ladder
- Jade Vine
- Jamesia Americana (Waxflower)
- Japanese Anemone
- Japanese Cobra Lily
- Japanese Iris
- Japanese Kerria
- Japanese Lantern
- Japanese Pachysandra
- Jasione
- Jasmine
- Jerusalem Artichoke
- Jerusalem Sage
- Jessamine
- Jewel Orchid
- Jewelweed
- Joe Pye Weed
- Johnny Jump Ups
- Jonquil (Daffodil)
- Joseph's Coat
- Jumbie Bean
- Justicia (Shrimp Plant)
25 Dazzling Flowers That Start With J
1. Jaborosa
- Scientific Name:Jaborosa integrifolia
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: Up to 6 inches (15 centimeters)
- Lowest Temperature: 10°F (-12°C)
- Toxicity: High
- Colors: White
The jaborosa is part of the nightshade family and has been used for medicinal purposes. However, it's highly toxic if consumed.
2. Jacaranda
- Scientific Name:Jacaranda mimosifolia
- Sun: Full sun
- Water: Keep soil moist
- Size: 25-50 feet (7-15 meters)
- Lowest Temperature: 30°F (-1.1°C)
- Toxicity: None
- Colors: Purple
The Jacaranda is a tree known as the black poui that grows beautiful purple flowers. They can be grown indoors, but they likely won't flower.
3. Jack-in-the-Pulpit
- Scientific Name:Arisaema triphyllum
- Sun: Partial shade, deep shade
- Water: Keep soil moist or occasionally wet
- Size: 1-2 feet (30-60 centimeters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: High, toxic if eaten
- Colors: Green, purple, lavender, white, brown, copper
This flower grows a fruit that looks like a flower. It shouldn't be eaten since the entire plant is highly toxic.
4. Jacob's Ladder
- Scientific Name:Polemonium caeruleum
- Sun: Partial shade, deep shade
- Water: Keep soil moist
- Size: 1.5-2 feet (45-60 centimeters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: None
- Colors: Blue
Jacob's ladder may benefit from afternoon shade in hot climates to prevent the foliage from burning. This plant is self-seeding, so it will easily spread in the garden if given the right conditions.
5. Jade Vine
- Scientific Name:Strongylodon macrobotrys
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 30-50 feet (9-15 meters)
- Lowest Temperature: 30°F (-1.1°C)
- Toxicity: None
- Colors: Pink, green
Jade vine is a tropical plant that can be grown indoors in cooler climates.
6.Jamesia Americana (Waxflower)
- Scientific Name:Jamesia americana
- Sun: Full sun
- Water: Allow soil to dry between waterings, drought tolerant
- Size: 3-6 feet (0.91-1.8 meters)
- Lowest Temperature: -25°F (-31.6°C)
- Toxicity: None
- Colors: White
The waxflower is a flowering shrub that's native to the hot and dry southwestern United States. It should be grown in a container in colder climates and brought inside during the winter.
7. Japanese Anemone
- Scientific Name:Eriocapitella hybrida
- Sun: Full sun, partial shade, dappled shade
- Water: Keep soil mostly moist
- Size: 3-4 feet (0.91-1 meters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: High if eaten in large quantities or if it touches the skin
- Colors: Pink, red, burgundy, yellow, gold, green, purple, lavender, white
This flower can cause skin irritation if you touch it, but it grows beautiful blooms in the late summer and throughout fall.
8. Japanese Cobra Lily
- Scientific Name:Arisaema sikokianum
- Sun: Partial shade, deep shade
- Water: Keep soil moist or wet
- Size: 1.5-2 feet (45-60 centimeters)
- Lowest Temperature: -20°F (-28°C)
- Toxicity: High
- Colors: Green, purple, white
This plant is related to the jack-in-the-pulpit and looks similar, but they're two different flowers.
9. Japanese Iris
- Scientific Name:Iris ensata
- Sun: Full sun, partial shade
- Water: Keep soil moist, tolerant of standing water in the warm months
- Size: 2-4 feet (60-121 centimeters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: Low
- Colors: Pink, yellow, gold, blue, purple, lavender, white
The term “Japanese iris” encompasses three species of Irises, hanashōbu, kakitsubata, and ayame.
Its three colors make it a wonderful addition to a Zen garden.
10. Japanese Kerria
- Scientific Name:Kerria japonica
- Sun: Partial shade, dappled shade, deep shade
- Water: Allow soil to dry slightly between waterings
- Size: 3-7 feet (0.91-2.1 meters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: None
- Colors: Yellow, gold
This is a shrub that grows a lot of flowers on it. It will work well as a border or a point of interest in a landscape.
11. Japanese Lantern
- Scientific Name:Physalis alkekengi
- Sun: Full sun
- Water: Keep soil moist
- Size: 1-2 feet (30-60 centimeters)
- Lowest Temperature: -35°F (-37.2°C)
- Toxicity: None
- Colors: White
This plant may spread aggressively if it has the space and may require frequent pruning.
12. Japanese Pachysandra
- Scientific Name:Pachysandra terminalis
- Sun: Partial shade, deep shade
- Water: Keep soil moist, drought tolerant
- Size: 6-12 inches (15-30 centimeters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: None
- Colors: White
This is a low-laying ground cover that grows small flowers.
13. Jasione
- Scientific Name:Jasione
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 10-14 inches (25-35 centimeters)
- Lowest Temperature: -20°F (-28°C)
- Toxicity: None
- Colors: Blue, white
14. Jasmine
- Scientific Name:Jasminum officinale
- Sun: Full sun, partial shade
- Water: Keep soil moist, occasionally dry
- Size: Vines up to 40 feet (12 meters)
- Lowest Temperature: 5°F (-15°C)
- Toxicity: None
- Colors: White
Jasmine can be grown indoors in bright light all year long or during winter in cold climates.
Jasmine is popular for its scent and is said to help alleviate anxiety and increase productivity.
15. Jerusalem Artichoke
- Scientific Name:Helianthus tuberosus
- Sun: Full sun, partial shade
- Water: Keep soil slightly dry, drought tolerance
- Size: 6-10 feet (1.8-3 meters)
- Lowest Temperature: -35°F (-37.2°C)
- Toxicity: None
- Colors: Yellow, gold
The Jerusalem artichoke is in the sunflower family and has an edible root.
16. Jerusalem Sage
- Scientific Name:Phlomis fruticosa
- Sun: Full sun, partial shade
- Water: Can tolerate dry or moist soil
- Size: 2-4 feet (60-121 centimeters)
- Lowest Temperature: 5°F (-15°C)
- Toxicity: None
- Colors: Yellow, gold
Jerusalem sage is a shrub that can spread out a bit wider than its height.
17. Jessamine
- Scientific Name:Cestrum
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 2-6 feet (0.6-1.8 meters)
- Lowest Temperature: -50°F (-45.5°C)
- Toxicity: Low
- Colors: Red, burgundy, purple, lavender, white
This plant grows berries after the flowers but they shouldn't be eaten because they're toxic.
18. Jewel Orchid
- Scientific Name:Ludisia discolor
- Sun: Part shade
- Water: Keep soil moist
- Size: 3-18 inches (7-45 centimeters)
- Lowest Temperature: 40°F (4.4°C)
- Toxicity: None
- Colors: Red, green, white
19. Jewelweed
- Scientific Name:Impatiens capensis
- Sun: Partial shade, dappled shade, deep shade
- Water: Keep soil moist and occasionally wet
- Size: 3-5 feet (0.91-1.5 meters)
- Lowest Temperature: -50°F (-45.5°C)
- Toxicity: None
- Colors: Orange, yellow, gold
20. Joe Pye Weed
- Scientific Name:Eutrochium purpureum
- Sun: Full sun, partial shade
- Water: Keep soil moist and occasionally wet
- Size: 2-5 feet (0.6-1.5 meters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: None
- Colors: Pink
This flower has a sweet vanilla scent. Although it likes moisture, it can withstand a bit of dry soil.
21. Johnny Jump Ups
- Scientific Name:Viola tricolor
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 3-10 inches (7-25 centimeters)
- Lowest Temperature: -50°F (-45.5°C)
- Toxicity: Very low, only toxic if eaten in large quantities
- Colors: Orange, yellow, gold, blue, purple, lavender, cream, tan, white, variegated
22. Jonquil (Daffodil)
- Scientific Name:Narcissus jonquilla
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 6-18 inches (15-45 centimeters)
- Lowest Temperature: -30°F (-34°C)
- Toxicity: Low
- Colors: Yellow, gold
23. Joseph's Coat
- Scientific Name:Amaranthus tricolor
- Sun: Full sun, partial shade, needs afternoon shade
- Water: Keep soil moist
- Size: 1.5-5 feet (0.3-1.5 meters)
- Lowest Temperature: -50°F (-45.5°C)
- Toxicity: None
- Colors: Red, yellow, gold, green
This plant's leaves are showier than its flowers. The red and yellow leaves will stand out like a flower in a flower bed.
24. Jumbie Bean
- Scientific Name: Leucaena leucocephala
- Sun: Full sun
- Water: Tolerant to most conditions ranging from dry to wet soils
- Size: Up to 20 feet (6 meters)
- Lowest Temperature: 40°F (4.4°C)
- Toxicity: Medium, seeds can be eaten occasionally if cooked
- Colors: White
This is a flowering tree that can be invasive, but it provides shade, fuel, fodder, and improves soil, which is often why it's grown despite the invasive tendencies.
25. Justicia (Shrimp Plant)
- Scientific Name:Phlogacanthus guttatus, formerly Justicia guttata
- Sun: Full sun, partial shade
- Water: Keep soil moist
- Size: 1-3 feet (30-91 centimeters)
- Lowest Temperature: 20°F (-6°C)
- Toxicity: None
- Colors: Pink, red, orange, yellow, gold, green, white
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